Zoutendijk, G.
North-Holland Publ, 1976
Buku Teks
edited by T.C. Hu, Stephen M. Robinson
Academic Press , 1973
Buku Teks
Croft, Anthony
Prentice - Hall , 1999
Buku Teks
Lytel, Allan
Howard W. Sams, 1964
Buku Teks
Arthanari, T.S.
John Wiley & Sons, 1981
Buku Teks